How To Fix WP415 - No parameters for implicit conversion cat. 'ULUF' exist

SAP Error Message - Details

• Message type: E = Error

• Message class: WP - Messages from POS interface

• Message number: 415

• Message text: No parameters for implicit conversion cat. 'ULUF' exist

What causes this issue?

No conversion parameters exist for the implicit conversion category
'ULUF'.

System Response

The IDoc data cannot be processed.

How to fix this error?

<DS:SIMG.W_DF_VK_0129.SIMG_OPOS>Maintain parameters for the conversion
category 'ULUF'</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WP415 - No parameters for implicit conversion cat. 'ULUF' exist ?

  The SAP error message:
  WP415 No parameters for implicit conversion cat. 'ULUF' exist
  typically occurs in the context of SAP Workflow or ABAP programming when there is an attempt to perform an implicit conversion between data objects or types, but no conversion parameters or rules are defined for the specified conversion category.
  
  Explanation / Cause
  
  Implicit conversion category 'ULUF' refers to a specific type of conversion in SAP's conversion framework.
  The error means that SAP is trying to convert data from one type to another implicitly using conversion category 'ULUF', but no conversion parameters or rules exist for this category.
  This usually happens when:
  
  A workflow container element or a method parameter is being assigned or passed, and SAP tries to convert the data types implicitly.
  The conversion category 'ULUF' is either custom or not properly maintained in the system.
  The conversion rules for this category are missing or incomplete in transaction SCON (Conversion Rules).
  
  
  
  
  Where does this happen?
  
  In SAP Workflow when passing container elements between steps or tasks.
  In ABAP programs or function modules where implicit conversions are defined.
  When using conversion exits or conversion routines that are not properly maintained.
  
  
  How to check and solve the issue
  
  
  Check the conversion category 'ULUF' in transaction SCON:
  
  Go to transaction SCON (Conversion Rules).
  Search for the conversion category 'ULUF'.
  Verify if any conversion parameters or rules exist for this category.
  If none exist, you need to define the conversion parameters or use a different conversion category.
  
  
  
  Review the data types involved:
  
  Identify the source and target data types involved in the conversion.
  Check if the conversion category 'ULUF' is appropriate for these data types.
  If not, adjust the workflow container element types or method parameters to compatible types or use a standard conversion category.
  
  
  
  Adjust the workflow container or method interface:
  
  If this error occurs in a workflow, check the container elements and their data types.
  Ensure that the data types are compatible or that explicit conversion logic is implemented.
  Avoid relying on implicit conversions that require undefined conversion categories.
  
  
  
  Implement or maintain conversion rules if needed:
  
  If 'ULUF' is a custom conversion category, you need to maintain the conversion rules in SCON.
  Define the source and target data types and the conversion routines.
  
  
  
  Debugging:
  
  Use the debugger to check where the implicit conversion is triggered.
  Check the call stack and the data types involved.
  This can help identify the exact point of failure.
  
  
  
  
  Additional Information
  
  Conversion categories in SAP define how data is converted between different types.
  Standard conversion categories are maintained by SAP; custom ones must be defined by the user.
  Implicit conversions are automatic conversions SAP tries to perform when assigning or passing data.
  Missing conversion parameters cause runtime errors like WP415.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error message
  WP415 No parameters for implicit conversion cat. 'ULUF' exist
  
  
  Cause
  Missing conversion parameters/rules for conversion category 'ULUF'
  
  
  Where
  SAP Workflow container element assignment, ABAP implicit conversions
  
  
  Solution
  Maintain conversion rules in SCON, adjust data types, avoid unsupported implicit conversions
  
  
  Transaction to check
  SCON (Conversion Rules)
  
  
  
  
  If you provide more context (e.g., workflow step, ABAP code snippet), I can help with a more specific solution.